Window ventilator for casements



June 13, 1944. o, KUBATZKY I WINDOW VENTILATOR FOR CASEMENTS Filed Nov. 22, 1940 2 Sheets-Sheet l INVENTOR. #9

' ATTORNEYS.

June 13, o KUBATZKY WINDOW VENTILATOR FOR GASEMENTS Filed Nov. 22, 1940 2 Sheets-Sheet 2 INVENTOR 50 Dun Kuhaizlg ATTORNEYS.

Patented June 13, 1944 UNITED STATES" PATENT OFFICE WINDOW VENTILAT'OR FOR CASEMEN TS Otto Kubatzky, St. Louis, Mo.

Application November 22, 1940, Serial No. 366,144 9"Glaims. (CI. 9896) The present invention relates toimprovements in window ventilators and the primary object of the invention is to provide a ventilator for casement windows which will permit ventilation of a room being had during inclement weather J when opening of the window is not possible.

A further object is to provide a ventilator unit adapted for mounting in a casement window sash in lieu of a. pane of glass. of the sash.

A further object of the invention, is. to provide a combined ventilator and screen which may be assembled and installedas a single unit in casement window sash withoutrequiring; any alterations being made to the sash.

A further object resides in the novel and. simple arrangement for securing, the unit, in the sash, together with the manner of sealing the marginal portions of, the unit to. the sash.

A still further object resides inv the arrangement for controlling the amount of ventilation desired.

Other objects andadvantages of the invention will be apparent from the following detailed description taken in connection with the accompanying drawings forming a. part of this specification and in which drawings: 7

Figure 1 is a view in elevation looking atthe inner side of the ventilator shown mounted. in a casement window sash, with portions broken away to illustrate certain details of. construction.

Figure 2 is a vertical section. thru the-ventilator in a closed position in. the sash.

Figure 3. is a vertical section thru the ventilatorin, an open position formaximumventilation.

Figure 4 is an enlarged fragmentary horizontal section at one end portion of the ventilator and showing the shield in a partially opened position.

Figure 5 is an enlarged fragmentary perspective view showing the manner of securing the ventilator in the sash.

Figure 6 is a fragmentary perspective showing the manner in which the deflecting shield coacts at its ends with the end shields or wings.

Figure '7 is a fragmentary perspectiveview of a lower corner portion of the ventilator frame.

In the drawings and wherein like reference characters designate corresponding parts thruout the several views, the letter A may generally designate a casement window including a frame B provided with an outwardly swinging sash C. The letter D designates. as a whole the ventilator unit, mounted inthe lower window pane opening of the sash C.

In the example shown the window A is a steel casement of ordinary construction. The frame B embodies a sill member or bar 5 having an upstanding inner flange 6 alongits inner edge which is disposed in the plane of the inner flange. 8 on the jambs or Side members 1 of the frame. As shown, the frame members 5 and 1 are substantially in the form of Z-bars providing parallel oppositely directed flanges con.- nected by a web portion.

The sash C is pivoted to swing outwardly of the frame Bv and embodies a bottom rail or bar Hl having an upstanding inner flange ll connected by a web l2 with-a depending outer flange l3. Extending. upward from the ends of'the bottom rail Iii are side rails or stiles l4 each having an inner flangeliconnected by a web l6 with an outer flange I1-. Connected between the side rails I4 is a horizontal sash bar l9: forming a rectangular window pane receiving opening in which the ventilator unit D may be mounted. The sash bar I9 is of T-shape forming a vertical flange ill at the inner portion of the bar lying in. the plane of the sash flanges II and I5, and a web portion 2| extending outwardly from the flange 20;: In the example illustrated, the ventilator unit D is shown mounted in. the lower .window pane opening of the sash 0,. vrith-a'window pane 22 mounted in the opening above the. sash bar [9.

The sash C is pivotedto swing outwardly from the frame B by means of the usual extension hinges 23. As shown in Figures 2, 3 and 4, the sash swings into the frame B with the. flanges ofthe frame forming abutments for the flanges of the sash.

With particular reference now to the ventilator unit D, the unit is adapted to be mounted in one of the openings in the sash; C in lieu of a. pane of glass to permit of ventilation being had without opening thesash. "If the window has been glazed and in use. the ventilator unit may be installed by merely. removing the putty and'glass from the opening in which the unit is to be installed with no further alteration of the sash being required. Y t

The ventilator D comprises an open rectangular shaped frame 25 preferably formed of sheet metal and including a horizontal topyrail 26, vertical side members 21 and a base rail 28; which maybe suitably secured together at theirends as by soldering, welding; or the like. The top rail 26 is of angle-shaped providing a depending stop flange 29 along the inner edge of the rail for confronting relation with the flange 20 of the sash bar l9. As will be seen, the stop flange 29 extends below the flange 20.

The side members 21 include a segmental shaped side shield providing a fixed outer win or side shield 30 having a right angular stop flange 3| formed along its vertical outer edge for confronting relation with the flanges of the sash side rails M. The flange 3| is formed by doubling the metal upon itself, and the outer layer of the metal is extended inwardly beyond the plane of the wing and provided along its free edge with a flange 32 extending in parallel spaced apart relation to the wing and forming an inwardly opening vertical groove 33. While the outer wings 30 have been shown formed integral with their stop flanges 3| the wings may be made separate if desired and secured along their outer edges to the flanges 3|.

Referring now to the base rail 28 and with particular reference to Figure '7, this base rail provides a trough 34 along the lower side of the frame 25 within which the lower edge of a swinging shield 35 rests. The base rail 28 is formed with a bottom wall 36 having an upstanding wall 31 normal thereto along its outer edge, and an inclined wall 38 along its inner edge divergent with respect to the vertical wall 31. The metal of the wall 31 is doubled upon itself and the outer layer of the metal is extended below the plane of the bottom wall 36 as at 39 forming a depending stop flange for confronting relation with the outer face of the upstanding flange ll of the sash bottom rai1 Ill. The ends of the trough 34 are provided with retaining walls 40; while the end portions of the vertical wall 31 are cut away to form drain ways 4| thru which water may drain outwardly from the trough 34. Secured in any preferred manner along the under side of the bottom wall 36 of the trough 'is an angle shaped strip providing a depending flange 42 which is spaced from the stop flange 39 and forms a downwardly opening channel 43 which is adapted to receive, in embracing relation, the upper portion of the irmer upstanding flange II of the bottom sash rail l0 when the ventilator is mounted in the sash opening.

Disposed inwardly of each fixed side shield or wing 30, is a movable segmental shaped inner side shield or wing 44 having its lower end extended into the trough 34 and having its upper -convexly arcuated edge spaced slightly below the upper arcuate edge of the fixed outer wing 30. its upper arcuate edge with an arcuate slot 45 which is outwardly offset as best shown in Figure 6 and slightly spaces the wings apart. A headed stud or pin 46 is secured in each of the fixed outer wings 30 and extend thru the slots 45 whereby the wings 30 and 44 are held in adjustable coupled relation. Adjacent the outer edge of each wing 44 is a shield engaging flange 41, normal to the plane of the wing, and which abuts against the edge of the flange 32 when the wing 44 is in a closed position as in Figures 4 and 5. Extending beyond the flange 41 is a tongue 48 which extends into the vertical groove 33 for forming a seal along the outer edge of the wing 44 when closed. The inner edge of each wing 44 is formed with a right angular stop flange 49 limiting inward swinging of the shield 35. Thus the flanges 41 and 49 restrain the shield 35 to swinging movement between the edges of theinner movable wings 44.

Each inner wing 44 is provided adjacent The shield 35 is adapted to rest freely in the trough 34 with the upper edge of the shield extending slightly above the upper arcuate edge of the inner wings 44 as shown in Figures 2, 3 and 6. This shield 35 comprises a glass panel 50 having a metal channel 5| along its top edge, and metal channels 52 along its side edges which have sliding engagement with the confronting faces of the inner wings 44. Any suitable form of handle 5| may be provided at the center of the top channel 5|.

An adjusting means is provided for regulating the amount of ventilation, by adjusting the position of the shield 35. Mounted upon each end of the top channel piece 5| is a friction snap fastener 53 each having a spring pressed ball 54 normally urged against the outer fixed wings30. These snap fasteners 53 extend over the upper arcuate edges of the wings 44 whereby the spring pressed balls 54 may coact with an arcuate series of depressions or sockets 55 formed in the upper portions of the outer wings 30 for yieldably retaining the shield in either a closed position or open positions of adjustment.

Provided at each end of the top channel 5| of the shield 35 is a downwardly extending lug 56 which engage over the outer surface of the inner wings 44 and prevent spreading of the wings when the shield is swung to a position for maximum ventilation-as in Figure 3. Since the wings 30 and 44 are coupled by the pins 46, these lugs 56 also resistspreading'ofthe outer wings 30 due to the action of the spring pressedjballs 54 exerting an outward pressure on the wings 30. 'A screen 58 is arranged over'the outer side of the ventilator frame 25 and comprises a metal frame 59 in which is mounted a suitable wire screening 60. The screen frame 59- conforms with the shape of the frame 25 and is secured to the frame 25 by suitable screws 6| passed thru the side rails of the screen frame and threaded into the stop flanges 3| of the side members 21 as shown in Figure 4. The outside dimensions M of the frames 25 and 59 are slightly less than the sash opening in which the ventilator unit is to be installed.

A sealing strip 62 such as felt, rubber or the like is disposed between the sash bar flange 20 and the depending flange 29 of the frame top rail 26, while similar sealing strips 63 are disposed between the inner side rail flanges l5 of the sash and the stop flanges 3| of the side member 21 of. .the ventilator frame. To facilitate installing the ventilator unit, the sealing strips 62 and 63 may be attached to their respective flanges of the ventilator frame 25 by anvadhesive or the like; g

. In installing the assembled ventilator unit D in the sash C, the unit is inserted into the window sash opening from the outside of the sash. The unit is first tilted slightly and the lower portion of the frame then moved into the sash opening and lowered slightly whereby the upstanding inner flange of the sash bottom rail In is received in the downwardly opening channel 43 on the under side of the trough 34.' The upperportion of the unit is then swung inward thru the opening whereby the topsealing strip 62 will engage the top rail flange 20 with a portion of the sealing strip'extending below the lower edge of the flange 20, and th sidev sealing strips 63 will engage the inner-flanges |5 of thesash side rails l4. The ventilator unit is thussupported along its lower portion upon the inner flange ll of the sash rail it! with th screen 58- disposed within the margins f the window opening andthe end shields 3!] and 44 extending inward of the sash between the stiles M. 1

A fastening means isprovided at each end of the frame 25 for'drawing and securing the ventilator unit'in'place in the sash C. Stamped outwardly from each of the stationary outer wings 30, at a location adjacent the upper end. of the wing and spaced'a short 'distance'inward from the stop flange 3 l is an L-shaped lug 65 forming a keyway or slot opening toward the flange 3|. Coacting with each lug 65 is an angle-shaped wedg member 65 providing a bearing flange 61 for seating against the inner face of the stile flange l5 and a cam flange 68 having a beveled edge acting with a cam action upon the. lug 65. With particular reference to Figure 5, it will be seen that when the wedge member 65 is moveddownward in the corner formed by the'fiange l5 and the outer wing 36, that the'beveled edge of the cam flange 68 acting upon the lug 55 will force the bearing flange 67 against the flange l5 and draw the wing 30 inwardly so that the sealing strip 63 is compressed between the flanges l5 and 3 I. Thus the two cam acting wedge members 66 serve to rigidly secure the ventilator unit in a sealed relation in the window sash opening.

When. the shield 35 is in a closed position as in Figure 1, th snap fasteners 53 engage with the outermost sockets 55 whereby the upper edge of the shield engages the lower portion of the sealing strip 32 and thus effectively seals the shield along its upper edge when closed. When the shield 35 is closed, the movable wings 44 are held in the position shown in Figure 2 thru engagement of the side edges of the shield with the flanges 41.

When only a limited amount of ventilation is desired, the shield 35 may be swung inward until the balls 54 of the snap fasteners 53 engage in the desired sockets 55. This may be accomplished without movement of the inner shields 44. If maximum ventilation is desired, the shield .is swung inward so that its side edges engage the flanges id on the inner edge of the movable Wings 45 and the snap fasteners 53 are freed from engagement with the outer wings 30. Further inward swinging of the shield will then swing the inner Wings 44 to a position for maximum ventilation as shown in Figure 3.

While the ventilating unit has been shown applied to a swinging sash of a steel casement window, the unit may be equally well installed in various other window openings having rabbeted margins.

Changes in detail may be made to the form of the invention herein shown and described without departing from the spirit of the invention or the scope of the following claims.

I claim:

1. A ventilator for windows comprising an open frame including top, bottom and side rails, a trough along the bottom rail, a fixed side wing extending inward from each side rail, a movable side wing inwardly of each fixed side wing, a pin and slot connection connecting the upper portions of the fixed and movable said wings, a deflecting shield rockably supported in said trough between and movable with respect to the movable side wings, and flanges on the movable side wings adjacent the inner and outer edges thereof, engageable by the side ends of the deflecting shield upon opening and closing movement of the deflecting shield.

2. Aventilator for windows comprising an open 7 frame including a top, bottom and side rails, an outer side wing rigid with each side rail, a trough along the bottom rail between the outer side wings, an inner side wing movably connected with each of the outer side wings and each having a flange along its inner and outer edges, a deflecting shield rockably supported in said trough between the flanges on the movable inner side wings, and friction acting holding means between the deflecting shield and fixed outer wings and inactive upon inwardswinging of the deflecting shield to a position for maximum ventilation.

3. A ventilator for windows comprising an open frame includinga top, bottom and side rails, an outer side wing rigid with each side rail, a trough along the bottom rail between the outer side wings, an inner side wingmovably connected with each of the outerside wings and each having a flange along its inner and outer edges, a deflecting shield rockably supported in said trough between the flanges on the movable side wings, depressions inthe upper portion of each outer side wing, and a friction snap fastener on each side end of the deflector shield each including a spring urged ball coacting with the depressions to regulate open positions of the shield, said snap fasteners being freed from engagement with the outer side wings when the shield is swung to a position for maximum ventilation.

4. A ventilator unit for steel casement window sash, comprising an open marginally flanged frame forming top, bottom and side rails, a trough along the bottom rail, means at each end of the frame for securing the ventilator in a glass receiving opening in the sash, a fixed segmental shaped side shield on each side rail of the frame, movable segmental shaped side shields having a pin and slot connection at their upper portions with the fixed side shields and having their lower ends rockable in said trough, flanges on the upwardly diverging edges of the movable side shields, and a deflector shield rockably supported in said trough with its side edges engaging the movable side shields between the flanges on the latter.

5. In a ventilator unit for casement windows, an open frame including a top, bottom and side rails, a sash bar engaging stop flange along each of said rails, a flange depending from the bottom rail in spaced relation to the stop flange of the rail and forming a downwardly opening sash bar receiving channel, an upstanding wall on said bottom rail in the plane of its stop flange, an inclined wall co-extensive with the inner longitudinal portion of the bottom rail and retaining walls at the ends of said inclined wall and the bottoms of the side rails forming a trough along the upper side of the bottom bar, means for securing the frame in a sash, side shields extending inwardly from each side rail, and a deflector shield rockable in said trough between the side shields.

6. In a window ventilator, an open frame including top, bottom and side rails, a trough along the bottom rail, a segmental shaped side wing rigid with each side rail, an arcuate series of sockets in the upper end portion of the wings, a segmental shaped inner wing movable over the inner face of each side wing and having arcuate upper edges, a pin and arcuate slot connection between each side wing and its inner wing, a deflector shield rockable in said trough, a downturned lug at each end of the upper edge of the shield and engaging the outer surface of the inner wings, and a spring urged snap ball at, each side end of the shield for engaging in the sockets in the rigid side wings.

7. In a window ventilator, an open frame including a top, bottom and side rails each having an inwardly facing stop flange, a trough along the upper side of the bottom flange, an inwardly opening groove in each side rail, an outer side wing rigid with each side rail, securing means at each outer side wing for drawing said stop flanges into engagement with a window sash, an inner movable wing associated with each outer side wing and each having a tongue along its outer side edge engaging in said grooves when the inner wings are in closed position, and a deflector shield rockable in said trough between the movable inner wings.

8. In a ventilator for insertion in a pane receiving opening of a metal casement sash, an open frame having a marginal stop flange, an L-shaped lug at each end of the frame, an angle shaped wedge member acting between each lug and the inner surface of the sash for drawing the frame inwardly and said stop flanges to a seated position in the window opening, and a deflector shield adjustably supported in the frame for swinging inwardly of the sash.

9. In a ventilator, an open frame for insertion in a pane receiving opening in a window from the outside thereof, said frame including stop flanges at the side ends of the frame engageable with the outer side of the window about the opening therein, and side shields extending inwardly from and rigid with said stop flanges; securing means detachably engaging said side shields and having bearing engagement with the inner side of the window for drawing said stop flanges into sealing engagement with the window; inner side shields movably carried by said frame and cooperating with said first mentioned side shields to form movable extensions thereof; and a ventilating shield rockably supported by said frame between said side shields and rockable independently of said inner side shields.

OTTO KUBATZKY. 

